N3-substituted-n1-sulfonyl-5-fluoropyrimidinone derivatives

ABSTRACT

This present disclosure is related to the field of N3-substituted-N1-sulfonyl-5-fluoropyrimidinones and their derivatives and to the use of these compounds as fungicides.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of U.S. Provisional PatentApplication Ser. No. 61/327,855 filed Apr. 26, 2010, which is expresslyincorporated by reference herein.

BACKGROUND AND SUMMARY OF THE INVENTION

Fungicides are compounds, of natural or synthetic origin, which act toprotect and/or cure plants against damage caused by agriculturallyrelevant fungi. Generally, no single fungicide is useful in allsituations. Consequently, research is ongoing to produce fungicides thatmay have better performance, are easier to use, and cost less.

The present disclosure relates toN3-substituted-M-sulfonyl-5-fluoropyrimidinone compounds and their useas fungicides. The compounds of the present disclosure may offerprotection against ascomycetes, basidiomycetes, deuteromycetes andoomycetes.

One embodiment of the present disclosure may include compounds ofFormula I:

wherein R₁ is:

-   -   H;

R₂ is:

-   -   C₁-C₆ alkyl optionally substituted with R₄;    -   benzyl optionally substituted with 1-3 R₅

R₃ is —S(O)₂R₆;

R₄ is independently halogen, C₁-C₆ alkyl, C₁-C₄ haloalkyl, C₁-C₄ alkoxy,C₁-C₄ haloalkoxy, C₁-C₄ alkylthio, C₁-C₄ haloalkylthio, amino, C₁-C₃alkylamino, C₂-C₆ alkoxycarbonyl, C₂-C₆ alkylcarbonyl, C₂-C₆alkylaminocarbonyl, hydroxyl, or C₃-C₆ trialkylsilyl;R₅ is independently halogen, C₁-C₆ alkyl, C₁-C₆ haloalkyl, C₁-C₆ alkoxy,C₁-C₆ haloalkoxy, C₁-C₆ alkylthio, C₁-C₆ haloalkylthio, amino, C₁-C₆alkylamino, C₂-C₆ dialkylamino, C₂-C₆ alkoxycarbonyl, or C₂-C₆alkylcarbonyl, nitro, hydroxyl, or cyano;R₆ is C₁-C₆ alkyl, C₁-C₆ haloalkyl, amino, C₁-C₆ alkylamino, C₂-C₆dialkylamino, a phenyl or benzyl wherein each of the phenyl or thebenzyl may be optionally substituted with 1-3 R₅, or a 5- or 6-memberedsaturated or unsaturated ring containing 1-3 heteroatoms wherein eachring may be optionally substituted with 1-3 R₅.

Another embodiment of the present disclosure may include a fungicidalcomposition for the control or prevention of fungal attack comprisingthe compounds described above and a phytologically acceptable carriermaterial.

Yet another embodiment of the present disclosure may include a methodfor the control or prevention of fungal attack on a plant, the methodincluding the steps of applying a fungicidally effective amount of oneor more of the compounds described above to at least one of the fungus,the plant, an area adjacent to the plant, and the seed adapted toproduce the plant.

The term “alkyl” refers to a branched, unbranched, or cyclic carbonchain, including methyl, ethyl, propyl, butyl, isopropyl, isobutyl,tertiary butyl, pentyl, hexyl, cyclopropyl, cyclobutyl, cyclopentyl,cyclohexyl and the like.

As used throughout this specification, the term ‘R’ refers to the groupconsisting of C₂₋₈ alkyl unless stated otherwise.

The term “alkoxy” refers to an —OR substituent.

The term “alkoxycarbonyl” refers to a —C(O)—OR substituent.

The term “alkylcarbonyl” refers to a —C(O)—R substituent.

The term “alkylthio” refers to an —S—R substituent.

The term “haloalkylthio” refers to an alkylthio, which is substitutedwith Cl, F, I, or Br or any combination thereof.

The term “trialkylsilyl” refers to —SiR₃.

The term “cyano” refers to a —C≡N substituent.

The term “hydroxyl” refers to an —OH substituent.

The term “amino” refers to a —NH₂ substituent.

The term “alkylamino” refers to a —N(H)—R substituent.

The term “dialkylamino” refers to a —NR₂ substituent.

The term “haloalkoxy” refers to an —OR—X substituent, wherein X is Cl,F, Br, or I, or any combination thereof.

The term “haloalkyl” refers to an alkyl, which is substituted with Cl,F, I, or Br or any combination thereof.

The term “halogen” or “halo” refers to one or more halogen atoms,defined as F, Cl, Br, and I.

The term “nitro” refers to a —NO₂ substituent.

Throughout the disclosure, reference to the compounds of Formula I isread as also including optical isomers and salts of Formula I, andhydrates thereof. Specifically, when Formula I contains a branched chainalkyl group, it is understood that such compounds include opticalisomers and racemates thereof. Exemplary salts include: hydrochloride,hydrobromide, hydroiodide, and the like.

It is also understood by those skilled in the art that additionalsubstitution is allowable, unless otherwise noted, as long as the rulesof chemical bonding and strain energy are satisfied and the productstill exhibits fungicidal activity.

Another embodiment of the present disclosure is a use of a compound ofFormula I, for protection of a plant against attack by a phytopathogenicorganism or the treatment of a plant infested by a phytopathogenicorganism, comprising the application of a compound of Formula I, or acomposition comprising the compound to soil, a plant, a part of a plant,foliage, roots, and/or seeds.

Additionally, another embodiment of the present disclosure is acomposition useful for protecting a plant against attack by aphytopathogenic organism and/or treatment of a plant infested by aphytopathogenic organism comprising a compound of Formula I and aphytologically acceptable carrier material.

DETAILED DESCRIPTION OF THE PRESENT DISCLOSURE

The compounds of the present disclosure may be applied by any of avariety of known techniques, either as the compounds or as formulationscomprising the compounds. For example, the compounds may be applied tothe roots, seeds or foliage of plants for the control of various fungi,without damaging the commercial value of the plants. The materials maybe applied in the form of any of the generally used formulation types,for example, as solutions, dusts, wettable powders, flowableconcentrates, or emulsifiable concentrates.

Preferably, the compounds of the present disclosure are applied in theform of a formulation, comprising one or more of the compounds ofFormula I with a phytologically acceptable carrier. Concentratedformulations may be dispersed in water, or other liquids, forapplication, or formulations may be dust-like or granular, which maythen be applied without further treatment. The formulations can beprepared according to procedures that are conventional in theagricultural chemical art.

The present disclosure contemplates all vehicles by which one or more ofthe compounds may be formulated for delivery and use as a fungicide.Typically, formulations are applied as aqueous suspensions or emulsions.Such suspensions or emulsions may be produced from water-soluble, watersuspendable, or emulsifiable formulations which are solids, usuallyknown as wettable powders; or liquids, usually known as emulsifiableconcentrates, aqueous suspensions, or suspension concentrates. As willbe readily appreciated, any material to which these compounds may beadded may be used, provided it yields the desired utility withoutsignificant interference with the activity of these compounds asantifungal agents.

Wettable powders, which may be compacted to form water dispersiblegranules, comprise an intimate mixture of one or more of the compoundsof Formula I, an inert carrier and surfactants. The concentration of thecompound in the wettable powder may be from about 1 percent to about 90percent by weight based on the total weight of the wettable powder, morepreferably about 25 weight percent to about 75 weight percent. In thepreparation of wettable powder formulations, the compounds may becompounded with any finely divided solid, such as prophyllite, talc,chalk, gypsum, Fuller's earth, bentonite, attapulgite, starch, casein,gluten, montmorillonite clays, diatomaceous earths, purified silicatesor the like. In such operations, the finely divided carrier andsurfactants are typically blended with the compound(s) and milled.

Emulsifiable concentrates of the compounds of Formula I may comprise aconvenient concentration, such as from about 1 weight percent to about50 weight percent of the compound, in a suitable liquid, based on thetotal weight of the concentrate. The compounds may be dissolved in aninert carrier, which is either a water-miscible solvent or a mixture ofwater-immiscible organic solvents, and emulsifiers. The concentrates maybe diluted with water and oil to form spray mixtures in the form ofoil-in-water emulsions. Useful organic solvents include aromatics,especially the high-boiling naphthalenic and olefinic portions ofpetroleum such as heavy aromatic naphtha. Other organic solvents mayalso be used, for example, terpenic solvents, including rosinderivatives, aliphatic ketones, such as cyclohexanone, and complexalcohols, such as 2-ethoxyethanol.

Emulsifiers which may be advantageously employed herein may be readilydetermined by those skilled in the art and include various nonionic,anionic, cationic and amphoteric emulsifiers, or a blend of two or moreemulsifiers. Examples of nonionic emulsifiers useful in preparing theemulsifiable concentrates include the polyalkylene glycol ethers andcondensation products of alkyl and aryl phenols, aliphatic alcohols,aliphatic amines or fatty acids with ethylene oxide, propylene oxidessuch as the ethoxylated alkyl phenols and carboxylic esters solubilizedwith the polyol or polyoxyalkylene. Cationic emulsifiers includequaternary ammonium compounds and fatty amine salts. Anionic emulsifiersinclude the oil-soluble salts (e.g., calcium) of alkylaryl sulphonicacids, oil-soluble salts or sulfated polyglycol ethers and appropriatesalts of phosphated polyglycol ether.

Representative organic liquids which may be employed in preparing theemulsifiable concentrates of the compounds of the present invention arethe aromatic liquids such as xylene, propyl benzene fractions; or mixednaphthalene fractions, mineral oils, substituted aromatic organicliquids such as dioctyl phthalate; kerosene; dialkyl amides of variousfatty acids, particularly the dimethyl amides of fatty glycols andglycol derivatives such as the n-butyl ether, ethyl ether or methylether of diethylene glycol, the methyl ether of triethylene glycol,petroleum fractions or hydrocarbons such as mineral oil, aromaticsolvents, paraffinic oils, and the like; vegetable oils such as soy beanoil, rape seed oil, olive oil, castor oil, sunflower seed oil, coconutoil, corn oil, cotton seed oil, linseed oil, palm oil, peanut oil,safflower oil, sesame oil, tung oil and the like; esters of the abovevegetable oils; and the like. Mixtures of two or more organic liquidsmay also be employed in the preparation of the emulsifiable concentrate.Organic liquids include xylene, and propyl benzene fractions, withxylene being most preferred in some cases. Surface-active dispersingagents are typically employed in liquid formulations and in an amount offrom 0.1 to 20 percent by weight based on the combined weight of thedispersing agent with one or more of the compounds. The formulations canalso contain other compatible additives, for example, plant growthregulators and other biologically active compounds used in agriculture.

Aqueous suspensions comprise suspensions of one or more water-insolublecompounds of Formula I, dispersed in an aqueous vehicle at aconcentration in the range from about 1 to about 50 weight percent,based on the total weight of the aqueous suspension. Suspensions areprepared by finely grinding one or more of the compounds, and vigorouslymixing the ground material into a vehicle comprised of water andsurfactants chosen from the same types discussed above. Othercomponents, such as inorganic salts and synthetic or natural gums, mayalso be added to increase the density and viscosity of the aqueousvehicle.

The compounds of Formula I can also be applied as granular formulations,which are particularly useful for applications to the soil. Granularformulations generally contain from about 0.5 to about 10 weightpercent, based on the total weight of the granular formulation of thecompound(s), dispersed in an inert carrier which consists entirely or inlarge part of coarsely divided inert material such as attapulgite,bentonite, diatomite, clay or a similar inexpensive substance. Suchformulations are usually prepared by dissolving the compounds in asuitable solvent and applying it to a granular carrier which has beenpreformed to the appropriate particle size, in the range of from about0.5 to about 3 mm. A suitable solvent is a solvent in which the compoundis substantially or completely soluble. Such formulations may also beprepared by making a dough or paste of the carrier and the compound andsolvent, and crushing and drying to obtain the desired granularparticle.

Dusts containing the compounds of Formula I may be prepared byintimately mixing one or more of the compounds in powdered form with asuitable dusty agricultural carrier, such as, for example, kaolin clay,ground volcanic rock, and the like. Dusts can suitably contain fromabout 1 to about 10 weight percent of the compounds, based on the totalweight of the dust.

The formulations may additionally contain adjuvant surfactants toenhance deposition, wetting and penetration of the compounds onto thetarget crop and organism. These adjuvant surfactants may optionally beemployed as a component of the formulation or as a tank mix. The amountof adjuvant surfactant will typically vary from 0.01 to 1.0 percent byvolume, based on a spray-volume of water, preferably 0.05 to 0.5 volumepercent. Suitable adjuvant surfactants include, but are not limited toethoxylated nonyl phenols, ethoxylated synthetic or natural alcohols,salts of the esters or sulphosuccinic acids, ethoxylatedorganosilicones, ethoxylated fatty amines, blends of surfactants withmineral or vegetable oils, crop oil concentrate (mineral oil(85%)+emulsifiers (15%)); nonylphenol ethoxylate;benzylcocoalkyldimethyl quaternary ammonium salt; blend of petroleumhydrocarbon, alkyl esters, organic acid, and anionic surfactant; C₉-C₁₁alkylpolyglycoside; phosphated alcohol ethoxylate; natural primaryalcohol(C₁₂-C₁₆) ethoxylate; di-sec-butylphenol EO—PO block copolymer;polysiloxane-methyl cap; nonylphenol ethoxylate+urea ammonium nitrate;emulsified methylated seed oil; tridecyl alcohol (synthetic) ethoxylate(8EO); tallow amine ethoxylate (15 EO); PEG(400) dioleate-99. Theformulations may also include oil-in-water emulsions such as thosedisclosed in U.S. patent application Ser. No. 11/495,228, the disclosureof which is expressly incorporated by reference herein.

The formulations may optionally include combinations that contain otherpesticidal compounds. Such additional pesticidal compounds may befungicides, insecticides, herbicides, nematocides, miticides,arthropodicides, bactericides or combinations thereof that arecompatible with the compounds of the present invention in the mediumselected for application, and not antagonistic to the activity of thepresent compounds. Accordingly, in such embodiments, the otherpesticidal compound is employed as a supplemental toxicant for the sameor for a different pesticidal use. The compounds of Formula I and thepesticidal compound in the combination can generally be present in aweight ratio of from 1:100 to 100:1.

The compounds of the present disclosure may also be combined with otherfungicides to form fungicidal mixtures and synergistic mixtures thereof.The fungicidal compounds of the present disclosure are often applied inconjunction with one or more other fungicides to control a wider varietyof undesirable diseases. When used in conjunction with otherfungicide(s), the presently claimed compounds may be formulated with theother fungicide(s), tank mixed with the other fungicide(s) or appliedsequentially with the other fungicide(s). Such other fungicides mayinclude 2-(thiocyanatomethylthio)-benzothiazole, 2-phenylphenol,8-hydroxyquinoline sulfate, ametoctradin, amisulbrom, antimycin,Ampelomyces quisqualis, azaconazole, azoxystrobin, Bacillus subtilis,benalaxyl, benomyl, benthiavalicarb-isopropyl,benzylaminobenzene-sulfonate (BABS) salt, bicarbonates, biphenyl,bismerthiazol, bitertanol, bixafen, blasticidin-S, borax, Bordeauxmixture, boscalid, bromuconazole, bupirimate, calcium polysulfide,captafol, captan, carbendazim, carboxin, carpropamid, carvone,chloroneb, chlorothalonil, chlozolinate, Coniothyrium minitans, copperhydroxide, copper octanoate, copper oxychloride, copper sulfate, coppersulfate (tribasic), cuprous oxide, cyazofamid, cyflufenamid, cymoxanil,cyproconazole, cyprodinil, dazomet, debacarb, diammoniumethylenebis-(dithiocarbamate), dichlofluanid, dichlorophen, diclocymet,diclomezine, dichloran, diethofencarb, difenoconazole, difenzoquat ion,diflumetorim, dimethomorph, dimoxystrobin, diniconazole, diniconazole-M,dinobuton, dinocap, diphenylamine, dithianon, dodemorph, dodemorphacetate, dodine, dodine free base, edifenphos, enestrobin,epoxiconazole, ethaboxam, ethoxyquin, etridiazole, famoxadone,fenamidone, fenarimol, fenbuconazole, fenfuram, fenhexamid, fenoxanil,fenpiclonil, fenpropidin, fenpropimorph, fentin, fentin acetate, fentinhydroxide, ferbam, ferimzone, fluazinam, fludioxonil, flumorph,fluopicolide, fluopyram, fluoroimide, fluoxastrobin, fluquinconazole,flusilazole, flusulfamide, flutianil, flutolanil, flutriafol, folpet,formaldehyde, fosetyl, fosetyl-aluminium, fuberidazole, furalaxyl,furametpyr, guazatine, guazatine acetates, GY-81, hexachlorobenzene,hexaconazole, hymexazol, imazalil, imazalil sulfate, imibenconazole,iminoctadine, iminoctadine triacetate, iminoctadine tris(albesilate),ipconazole, iprobenfos, iprodione, iprovalicarb, isoprothiolane,isopyrazam, isotianil, kasugamycin, kasugamycin hydrochloride hydrate,kresoxim-methyl, mancopper, mancozeb, mandipropamid, maneb, mepanipyrim,mepronil, mercuric chloride, mercuric oxide, mercurous chloride,metalaxyl, mefenoxam, metalaxyl-M, metam, metam-ammonium,metam-potassium, metam-sodium, metconazole, methasulfocarb, methyliodide, methyl isothiocyanate, metiram, metominostrobin, metrafenone,mildiomycin, myclobutanil, nabam, nitrothal-isopropyl, nuarimol,octhilinone, ofurace, oleic acid (fatty acids), orysastrobin, oxadixyl,oxine-copper, oxpoconazole fumarate, oxycarboxin, pefurazoate,penconazole, pencycuron, penflufen, pentachlorophenol, pentachlorophenyllaurate, penthiopyrad, phenylmercury acetate, phosphonic acid,phthalide, picoxystrobin, polyoxin B, polyoxins, polyoxorim, potassiumbicarbonate, potassium hydroxyquinoline sulfate, probenazole,prochloraz, procymidone, propamocarb, propamocarb hydrochloride,propiconazole, propineb, proquinazid, prothioconazole, pyraclostrobin,pyrametostrobin, pyraoxystrobin, pyrazophos, pyribencarb, pyributicarb,pyrifenox, pyrimethanil, pyroquilon, quinoclamine, quinoxyfen,quintozene, Reynoutria sachalinensis extract, sedaxane, silthiofam,simeconazole, sodium 2-phenylphenoxide, sodium bicarbonate, sodiumpentachlorophenoxide, spiroxamine, sulfur, SYP-Z071, SYP-Z048, tar oils,tebuconazole, tebufloquin, tecnazene, tetraconazole, thiabendazole,thifluzamide, thiophanate-methyl, thiram, tiadinil, tolclofos-methyl,tolylfluanid, triadimefon, triadimenol, triazoxide, tricyclazole,tridemorph, trifloxystrobin, triflumizole, triforine, triticonazole,validamycin, valifenalate, valiphenal, vinclozolin, zineb, ziram,zoxamide, Candida oleophila, Fusarium oxysporum, Gliocladium spp.,Phlebiopsis gigantea, Streptomyces griseoviridis, Trichoderma spp.,(RS)—N-(3,5-dichlorophenyl)-2-(methoxymethyl)-succinimide,1,2-dichloropropane, 1,3-dichloro-1,1,3,3-tetrafluoroacetone hydrate,1-chloro-2,4-dinitronaphthalene, 1-chloro-2-nitropropane,2-(2-heptadecyl-2-imidazolin-1-yl)ethanol,2,3-dihydro-5-phenyl-1,4-dithi-ine 1,1,4,4-tetraoxide,2-methoxyethylmercury acetate, 2-methoxyethylmercury chloride,2-methoxyethylmercury silicate, 3-(4-chlorophenyl)-5-methylrhodanine,4-(2-nitroprop-1-enyl)phenyl thiocyanateme, ampropylfos, anilazine,azithiram, barium polysulfide, Bayer 32394, benodanil, benquinox,bentaluron, benzamacril; benzamacril-isobutyl, benzamorf, binapacryl,bis(methylmercury) sulfate, bis(tributyltin) oxide, buthiobate, cadmiumcalcium copper zinc chromate sulfate, carbamorph, CECA, chlobenthiazone,chloraniformethan, chlorfenazole, chlorquinox, climbazole, copperbis(3-phenylsalicylate), copper zinc chromate, cufraneb, cuprichydrazinium sulfate, cuprobam, cyclafuramid, cypendazole, cyprofuram,decafentin, dichlone, dichlozoline, diclobutrazol, dimethirimol,dinocton, dinosulfon, dinoterbon, dipyrithione, ditalimfos, dodicin,drazoxolon, EBP, ESBP, etaconazole, etem, ethirim, fenaminosulf,fenapanil, fenitropan, fluotrimazole, furcarbanil, furconazole,furconazole-cis, furmecyclox, furophanate, glyodine, griseofulvin,halacrinate, Hercules 3944, hexylthiofos, ICIA0858, isopamphos,isovaledione, mebenil, mecarbinzid, metazoxolon, methfuroxam,methylmercury dicyandiamide, metsulfovax, milneb, mucochloric anhydride,myclozolin, N-3,5-dichlorophenyl-succinimide,N-3-nitrophenylitaconimide, natamycin,N-ethylmercurio-4-toluenesulfonanilide, nickelbis(dimethyldithiocarbamate), OCH, phenylmercurydimethyldithiocarbamate, phenylmercury nitrate, phosdiphen, prothiocarb;prothiocarb hydrochloride, pyracarbolid, pyridinitril, pyroxychlor,pyroxyfur, quinacetol; quinacetol sulfate, quinazamid, quinconazole,rabenzazole, salicylanilide, SSF-109, sultropen, tecoram, thiadifluor,thicyofen, thiochlorfenphim, thiophanate, thioquinox, tioxymid,triamiphos, triarimol, triazbutil, trichlamide, urbacid, and zarilamid,and any combinations thereof.

Additionally, the compounds of the present invention may be combinedwith other pesticides, including insecticides, nematocides, miticides,arthropodicides, bactericides or combinations thereof that arecompatible with the compounds of the present invention in the mediumselected for application, and not antagonistic to the activity of thepresent compounds to form pesticidal mixtures and synergistic mixturesthereof. The fungicidal compounds of the present disclosure may beapplied in conjunction with one or more other pesticides to control awider variety of undesirable pests. When used in conjunction with otherpesticides, the presently claimed compounds may be formulated with theother pesticide(s), tank mixed with the other pesticide(s) or appliedsequentially with the other pesticide(s). Typical insecticides include,but are not limited to: 1,2-dichloropropane, abamectin, acephate,acetamiprid, acethion, acetoprole, acrinathrin, acrylonitrile,alanycarb, aldicarb, aldoxycarb, aldrin, allethrin, allosamidin,allyxycarb, alpha-cypermethrin, alpha-ecdysone, alpha-endosulfan,amidithion, aminocarb, amiton, amiton oxalate, amitraz, anabasine,athidathion, azadirachtin, azamethiphos, azinphos-ethyl,azinphos-methyl, azothoate, barium hexafluorosilicate, barthrin,bendiocarb, benfuracarb, bensultap, beta-cyfluthrin, beta-cypermethrin,bifenthrin, bioallethrin, bioethanomethrin, biopermethrin,bistrifluoron, borax, boric acid, bromfenvinfos, bromocyclen, bromo-DDT,bromophos, bromophos-ethyl, bufencarb, buprofezin, butacarb,butathiofos, butocarboxim, butonate, butoxycarboxim, cadusafos, calciumarsenate, calcium polysulfide, camphechlor, carbanolate, carbaryl,carbofuran, carbon disulfide, carbon tetrachloride, carbophenothion,carbosulfan, cartap, cartap hydrochloride, chlorantraniliprole,chlorbicyclen, chlordane, chlordecone, chlordimeform, chlordimeformhydrochloride, chlorethoxyfos, chlorfenapyr, chlorfenvinphos,chlorfluazuron, chlormephos, chloroform, chloropicrin, chlorphoxim,chlorprazophos, chlorpyrifos, chlorpyrifos-methyl, chlorthiophos,chromafenozide, cinerin I, cinerin II, cinerins, cismethrin,cloethocarb, closantel, clothianidin, copper acetoarsenite, copperarsenate, copper naphthenate, copper oleate, coumaphos, coumithoate,crotamiton, crotoxyphos, crufomate, cryolite, cyanofenphos, cyanophos,cyanthoate, cyantraniliprole, cyclethrin, cycloprothrin, cyfluthrin,cyhalothrin, cypermethrin, cyphenothrin, cyromazine, cythioate, DDT,decarbofuran, deltamethrin, demephion, demephion-O, demephion-S,demeton, demeton-methyl, demeton-O, demeton-O-methyl, demeton-S,demeton-S-methyl, demeton-S-methylsulphon, diafenthiuron, dialifos,diatomaceous earth, diazinon, dicapthon, dichlofenthion, dichlorvos,dicresyl, dicrotophos, dicyclanil, dieldrin, diflubenzuron, dilor,dimefluthrin, dimefox, dimetan, dimethoate, dimethrin, dimethylvinphos,dimetilan, dinex, dinex-diclexine, dinoprop, dinosam, dinotefuran,diofenolan, dioxabenzofos, dioxacarb, dioxathion, disulfoton,dithicrofos, d-limonene, DNOC, DNOC-ammonium, DNOC-potassium,DNOC-sodium, doramectin, ecdysterone, emamectin, emamectin benzoate,EMPC, empenthrin, endosulfan, endothion, endrin, EPN, epofenonane,eprinomectin, esdepalléthrine, esfenvalerate, etaphos, ethiofencarb,ethion, ethiprole, ethoate-methyl, ethoprophos, ethyl formate,ethyl-DDD, ethylene dibromide, ethylene dichloride, ethylene oxide,etofenprox, etrimfos, EXD, famphur, fenamiphos, fenazaflor,fenchlorphos, fenethacarb, fenfluthrin, fenitrothion, fenobucarb,fenoxacrim, fenoxycarb, fenpirithrin, fenpropathrin, fensulfothion,fenthion, fenthion-ethyl, fenvalerate, fipronil, flonicamid,flubendiamide, flucofuron, flucycloxuron, flucythrinate, flufenerim,flufenoxuron, flufenprox, fluvalinate, fonofos, formetanate, formetanatehydrochloride, formothion, formparanate, formparanate hydrochloride,fosmethilan, fospirate, fosthietan, furathiocarb, furethrin,gamma-cyhalothrin, gamma-HCH, halfenprox, halofenozide, HCH, HEOD,heptachlor, heptenophos, heterophos, hexaflumuron, HHDN, hydramethylnon,hydrogen cyanide, hydroprene, hyquincarb, imidacloprid, imiprothrin,indoxacarb, iodomethane, IPSP, isazofos, isobenzan, isocarbophos,isodrin, isofenphos, isofenphos-methyl, isoprocarb, isoprothiolane,isothioate, isoxathion, ivermectin, jasmolin I, jasmolin II, jodfenphos,juvenile hormone I, juvenile hormone II, juvenile hormone III, kelevan,kinoprene, lambda-cyhalothrin, lead arsenate, lepimectin, leptophos,lindane, lirimfos, lufenuron, lythidathion, malathion, malonoben,mazidox, mecarbam, mecarphon, menazon, mephosfolan, mercurous chloride,mesulfenfos, metaflumizone, methacrifos, methamidophos, methidathion,methiocarb, methocrotophos, methomyl, methoprene, methoxychlor,methoxyfenozide, methyl bromide, methyl isothiocyanate,methylchloroform, methylene chloride, metofluthrin, metolcarb,metoxadiazone, mevinphos, mexacarbate, milbemectin, milbemycin oxime,mipafox, mirex, molosultap, monocrotophos, monomehypo, monosultap,morphothion, moxidectin, naftalofos, naled, naphthalene, nicotine,nifluridide, nitenpyram, nithiazine, nitrilacarb, novaluron,noviflumuron, omethoate, oxamyl, oxydemeton-methyl, oxydeprofos,oxydisulfoton, para-dichlorobenzene, parathion, parathion-methyl,penfluoron, pentachlorophenol, permethrin, phenkapton, phenothrin,phenthoate, phorate, phosalone, phosfolan, phosmet, phosnichlor,phosphamidon, phosphine, phoxim, phoxim-methyl, pirimetaphos,pirimicarb, pirimiphos-ethyl, pirimiphos-methyl, potassium arsenite,potassium thiocyanate, pp′-DDT, prallethrin, precocene I, precocene II,precocene III, primidophos, profenofos, profluralin, promacyl,promecarb, propaphos, propetamphos, propoxur, prothidathion, prothiofos,prothoate, protrifenbute, pyraclofos, pyrafluprole, pyrazophos,pyresmethrin, pyrethrin I, pyrethrin II, pyrethrins, pyridaben,pyridalyl, pyridaphenthion, pyrifluquinazon, pyrimidifen, pyrimitate,pyriprole, pyriproxyfen, quassia, quinalphos, quinalphos-methyl,quinothion, rafoxanide, resmethrin, rotenone, ryania, sabadilla,schradan, selamectin, silafluofen, silica gel, sodium arsenite, sodiumfluoride, sodium hexafluorosilicate, sodium thiocyanate, sophamide,spinetoram, spinosad, spiromesifen, spirotetramat, sulcofuron,sulcofuron-sodium, sulfluramid, sulfotep, sulfoxaflor, sulfurylfluoride, sulprofos, tau-fluvalinate, tazimcarb, TDE, tebufenozide,tebufenpyrad, tebupirimfos, teflubenzuron, tefluthrin, temephos, TEPP,terallethrin, terbufos, tetrachloroethane, tetrachlorvinphos,tetramethrin, tetramethylfluthrin, theta-cypermethrin, thiacloprid,thiamethoxam, thicrofos, thiocarboxime, thiocyclam, thiocyclam oxalate,thiodicarb, thiofanox, thiometon, thiosultap, thiosultap-disodium,thiosultap-monosodium, thuringiensin, tolfenpyrad, tralomethrin,transfluthrin, transpermethrin, triarathene, triazamate, triazophos,trichlorfon, trichlormetaphos-3, trichloronat, trifenofos, triflumuron,trimethacarb, triprene, vamidothion, vaniliprole, XMC, xylylcarb,zeta-cypermethrin, zolaprofos, and any combinations thereof.

Additionally, the compounds of the present invention may be combinedwith herbicides that are compatible with the compounds of the presentinvention in the medium selected for application, and not antagonisticto the activity of the present compounds to form pesticidal mixtures andsynergistic mixtures thereof. The fungicidal compounds of the presentdisclosure may be applied in conjunction with one or more herbicides tocontrol a wide variety of undesirable plants. When used in conjunctionwith herbicides, the presently claimed compounds may be formulated withthe herbicide(s), tank mixed with the herbicide(s) or appliedsequentially with the herbicide(s). Typical herbicides include, but arenot limited to: 4-CPA; 4-CPB; 4-CPP; 2,4-D; 3,4-DA; 2,4-DB; 3,4-DB;2,4-DEB; 2,4-DEP; 3,4-DP; 2,3,6-TBA; 2,4,5-T; 2,4,5-TB; acetochlor,acifluorfen, aclonifen, acrolein, alachlor, allidochlor, alloxydim,allyl alcohol, alorac, ametridione, ametryn, amibuzin, amicarbazone,amidosulfuron, aminocyclopyrachlor, aminopyralid, amiprofos-methyl,amitrole, ammonium sulfamate, anilofos, anisuron, asulam, atraton,atrazine, azafenidin, azimsulfuron, aziprotryne, barban, BCPC,beflubutamid, benazolin, bencarbazone, benfluralin, benfuresate,bensulfuron, bensulide, bentazone, benzadox, benzfendizone, benzipram,benzobicyclon, benzofenap, benzofluor, benzoylprop, benzthiazuron,bicyclopyrone, bifenox, bilanafos, bispyribac, borax, bromacil,bromobonil, bromobutide, bromofenoxim, bromoxynil, brompyrazon,butachlor, butafenacil, butamifos, butenachlor, buthidazole, buthiuron,butralin, butroxydim, buturon, butylate, cacodylic acid, cafenstrole,calcium chlorate, calcium cyanamide, cambendichlor, carbasulam,carbetamide, carboxazole chlorprocarb, carfentrazone, CDEA, CEPC,chlomethoxyfen, chloramben, chloranocryl, chlorazifop, chlorazine,chlorbromuron, chlorbufam, chloreturon, chlorfenac, chlorfenprop,chlorflurazole, chlorflurenol, chloridazon, chlorimuron, chlornitrofen,chloropon, chlorotoluron, chloroxuron, chloroxynil, chlorpropham,chlorsulfuron, chlorthal, chlorthiamid, cinidon-ethyl, cinmethylin,cinosulfuron, cisanilide, clethodim, cliodinate, clodinafop, clofop,clomazone, clomeprop, cloprop, cloproxydim, clopyralid, cloransulam,CMA, copper sulfate, CPMF, CPPC, credazine, cresol, cumyluron,cyanatryn, cyanazine, cycloate, cyclosulfamuron, cycloxydim, cycluron,cyhalofop, cyperquat, cyprazine, cyprazole, cypromid, daimuron, dalapon,dazomet, delachlor, desmedipham, desmetryn, di-allate, dicamba,dichlobenil, dichloralurea, dichlormate, dichlorprop, dichlorprop-P,diclofop, diclosulam, diethamquat, diethatyl, difenopenten, difenoxuron,difenzoquat, diflufenican, diflufenzopyr, dimefuron, dimepiperate,dimethachlor, dimethametryn, dimethenamid, dimethenamid-P, dimexano,dimidazon, dinitramine, dinofenate, dinoprop, dinosam, dinoseb,dinoterb, diphenamid, dipropetryn, diquat, disul, dithiopyr, diuron,DMPA, DNOC, DSMA, EBEP, eglinazine, endothal, epronaz, EPTC, erbon,esprocarb, ethalfluralin, ethametsulfuron, ethidimuron, ethiolate,ethofumesate, ethoxyfen, ethoxysulfuron, etinofen, etnipromid,etobenzanid, EXD, fenasulam, fenoprop, fenoxaprop, fenoxaprop-P,fenoxasulfone, fenteracol, fenthiaprop, fentrazamide, fenuron, ferroussulfate, flamprop, flamprop-M, flazasulfuron, florasulam, fluazifop,fluazifop-P, fluazolate, flucarbazone, flucetosulfuron, fluchloralin,flufenacet, flufenican, flufenpyr, flumetsulam, flumezin, flumiclorac,flumioxazin, flumipropyn, fluometuron, fluorodifen, fluoroglycofen,fluoromidine, fluoronitrofen, fluothiuron, flupoxam, flupropacil,flupropanate, flupyrsulfuron, fluridone, fluorochloridone, fluoroxypyr,flurtamone, fluthiacet, fomesafen, foramsulfuron, fosamine, furyloxyfen,glufosinate, glufosinate-P, glyphosate, halosafen, halosulfuron,haloxydine, haloxyfop, haloxyfop-P, hexachloroacetone, hexaflurate,hexazinone, imazamethabenz, imazamox, imazapic, imazapyr, imazaquin,imazethapyr, imazosulfuron, indanofan, indaziflam, iodobonil,iodomethane, iodosulfuron, ioxynil, ipazine, ipfencarbazone, iprymidam,isocarbamid, isocil, isomethiozin, isonoruron, isopolinate, isopropalin,isoproturon, isouron, isoxaben, isoxachlortole, isoxaflutole,isoxapyrifop, karbutilate, ketospiradox, lactofen, lenacil, linuron,MAA, MAMA, MCPA, MCPA-thioethyl, MCPB, mecoprop, mecoprop-P, medinoterb,mefenacet, mefluidide, mesoprazine, mesosulfuron, mesotrione, metam,metamifop, metamitron, metazachlor, metazosulfuron, metflurazon,methabenzthiazuron, methalpropalin, methazole, methiobencarb,methiozolin, methiuron, methometon, methoprotryne, methyl bromide,methyl isothiocyanate, methyldymron, metobenzuron, metobromuron,metolachlor, metosulam, metoxuron, metribuzin, metsulfuron, molinate,monalide, monisouron, monochloroacetic acid, monolinuron, monuron,morfamquat, MSMA, naproanilide, napropamide, naptalam, neburon,nicosulfuron, nipyraclofen, nitralin, nitrofen, nitrofluorfen,norflurazon, noruron, OCH, orbencarb, ortho-dichlorobenzene,orthosulfamuron, oryzalin, oxadiargyl, oxadiazon, oxapyrazon,oxasulfuron, oxaziclomefone, oxyfluorfen, parafluoron, paraquat,pebulate, pelargonic acid, pendimethalin, penoxsulam, pentachlorophenol,pentanochlor, pentoxazone, perfluidone, pethoxamid, phenisopham,phenmedipham, phenmedipham-ethyl, phenobenzuron, phenylmercury acetate,picloram, picolinafen, pinoxaden, piperophos, potassium arsenite,potassium azide, potassium cyanate, pretilachlor, primisulfuron,procyazine, prodiamine, profluazol, profluralin, profoxydim,proglinazine, prometon, prometryn, propachlor, propanil, propaquizafop,propazine, propham, propisochlor, propoxycarbazone, propyrisulfuron,propyzamide, prosulfalin, prosulfocarb, prosulfuron, proxan, prynachlor,pydanon, pyraclonil, pyraflufen, pyrasulfotole, pyrazolynate,pyrazosulfuron, pyrazoxyfen, pyribenzoxim, pyributicarb, pyriclor,pyridafol, pyridate, pyriftalid, pyriminobac, pyrimisulfan, pyrithiobac,pyroxasulfone, pyroxsulam, quinclorac, quinmerac, quinoclamine,quinonamid, quizalofop, quizalofop-P, rhodethanil, rimsulfuron,saflufenacil, S-metolachlor, sebuthylazine, secbumeton, sethoxydim,siduron, simazine, simeton, simetryn, SMA, sodium arsenite, sodiumazide, sodium chlorate, sulcotrione, sulfallate, sulfentrazone,sulfometuron, sulfosulfuron, sulfuric acid, sulglycapin, swep, TCA,tebutam, tebuthiuron, tefuryltrione, tembotrione, tepraloxydim,terbacil, terbucarb, terbuchlor, terbumeton, terbuthylazine, terbutryn,tetrafluoron, thenylchlor, thiazafluoron, thiazopyr, thidiazimin,thidiazuron, thiencarbazone-methyl, thifensulfuron, thiobencarb,tiocarbazil, tioclorim, topramezone, tralkoxydim, tri-allate,triasulfuron, triaziflam, tribenuron, tricamba, triclopyr, tridiphane,trietazine, trifloxysulfuron, trifluralin, triflusulfuron, trifop,trifopsime, trihydroxytriazine, trimeturon, tripropindan, tritactritosulfuron, vernolate, and xylachlor.

Another embodiment of the present disclosure is a method for the controlor prevention of fungal attack. This method comprises applying to thesoil, plant, roots, foliage, seed or locus of the fungus, or to a locusin which the infestation is to be prevented (for example applying tocereal or grape plants), a fungicidally effective amount of one or moreof the compounds of Formula I. The compounds are suitable for treatmentof various plants at fungicidal levels, while exhibiting lowphytotoxicity. The compounds may be useful both in a protectant and/oran eradicant fashion.

The compounds have been found to have significant fungicidal effectparticularly for agricultural use. Many of the compounds areparticularly effective for use with agricultural crops and horticulturalplants.

It will be understood by those in the art that the efficacy of thecompound for the foregoing fungi establishes the general utility of thecompounds as fungicides.

The compounds have broad ranges of activity against fungicidalpathogens. Exemplary pathogens may include, but are not limited to,wheat leaf blotch (Septoria tritici, also known as Mycosphaerellagraminicola), apple scab (Venturia inaequalis), and Cercospora leafspots of sugar beets (Cercospora beticola), peanuts (Cercosporaarachidicola and Cercosporidium personatum) and other crops, and blacksigatoka of bananas (Mycosphaerella fujiensis). The exact amount of theactive material to be applied is dependent not only on the specificactive material being applied, but also on the particular actiondesired, the fungal species to be controlled, and the stage of growththereof, as well as the part of the plant or other product to becontacted with the compound. Thus, all the compounds, and formulationscontaining the same, may not be equally effective at similarconcentrations or against the same fungal species.

The compounds are effective in use with plants in a disease-inhibitingand phytologically acceptable amount. The term “disease-inhibiting andphytologically acceptable amount” refers to an amount of a compound thatkills or inhibits the plant disease for which control is desired, but isnot significantly toxic to the plant. This amount will generally be fromabout 0.1 to about 1000 ppm (parts per million), with 1 to 500 ppm beingpreferred. The exact concentration of compound required varies with thefungal disease to be controlled, the type of formulation employed, themethod of application, the particular plant species, climate conditions,and the like. A suitable application rate is typically in the range fromabout 0.10 to about 4 pounds/acre (about 0.01 to 0.45 grams per squaremeter, g/m²).

Any range or desired value given herein may be extended or alteredwithout losing the effects sought, as is apparent to the skilled personfor an understanding of the teachings herein.

The compounds of Formula I may be made using well-known chemicalprocedures. Intermediates not specifically mentioned in this disclosureare either commercially available, may be made by routes disclosed inthe chemical literature, or may be readily synthesized from commercialstarting materials utilizing standard procedures.

The following examples are presented to illustrate the various aspectsof the compounds of the present disclosure and should not be construedas limitations to the claims.

EXAMPLES Example 1 Preparation of1-Benzenesulfonyl-5-fluoro-4-imino-3-methyl-3,4-dihydro-1H-pyrimidin-2-one(Compound 1)

4-Amino-1-benzenesulfonyl-5-fluoro-1H-pyrimidine-2-one (200 mg, 0.74mmol) was stirred at room temperature in dimethyl formamide (3 mL)together with anhydrous potassium carbonate (210 mg, 1.5 mmol).Iodomethane (210 mg, 1.5 mmol) was added and the mixture was heated at60° C. for 3 hours. After cooling to room temperature, the mixture waspartitioned between ethyl acetate (EtOAc) and water. The organic phasewas dried over magnesium sulfate, filtered, and evaporated. The crudeproduct was purified by chromatography on silica gel (gradient, 20 to80% EtOAc in petroleum ether) to isolate1-benzenesulfonyl-5-fluoro-4-imino-3-methyl-3,4-dihydro-1H-pyrimidin-2-one(106 mg, 50%) as a white solid: mp 144° C.; ¹H NMR (600 MHz, DMSO-d₆) δ8.52 (s, 1H), 8.03-8.00 (m, 2H), 7.97 (d, J=5.9 Hz, 1H), 7.80-7.76 (m,1H), 7.67-7.63 (m, 2H), 3.09 (s, 3H); ESIMS m/z 284 ([M+H]⁺).

Compounds 2-4 in Table 1 were prepared via this route.

Example 2 Preparation of1-benzenesulfonyl-5-fluoro-4-imino-3-ethyl-3,4-dihydro-1H-pyrimidin-2-one(Compound 6)

To a 25 mL sealed tube were added4-amino-1-benzenesulfonyl-5-fluoro-1H-pyrimidine-2-one (1.0 g, 3.71mmol), anhydrous potassium carbonate (K₂CO₃; 2.05 g, 14.9 mmol), andN,N-dimethylformamide (DMF; 10 mL), followed by iodoethane (EtI; 3.45 g,22.3 mmol). The reaction vessel was sealed, and the reaction mixture waswarmed to 60° C. and stirred for 1 hour. The reaction mixture was cooledto room temperature, diluted with ethyl acetate (EtOAc; 250 mL), andwashed with water (H₂O; 3×100 mL). The organic phase was dried overmagnesium sulfate (MgSO₄), filtered, and the solvent evaporated underreduced pressure. Purification by flash chromatography (SiO₂,EtOAc/Hexanes gradient) affordedbenzenesulfonyl-5-fluoro-4-imino-3-ethyl-3,4-dihydro-1H-pyrimidin-2-oneas a pale yellow solid (200 mg; 18%): mp 163-166° C.; ¹H NMR (400 MHz,DMSO-d₆) δ 8.82 (m, 1H), 8.29 (d, J=6.8 Hz, 1H), 8.02 (dd, J=8.4, 1.1Hz, 2H), 7.79 (ddd, J=6.9, 2.3, 1.1 Hz, 1H), 7.66 (dd, J=10.7, 4.9 Hz,2H), 3.31 (q, J=7.2 Hz, 2H), 1.09 (t, J=7.2 Hz, 3H); ESIMS m/z 298([M+H]⁺).

Compounds 7-9 were prepared as described in Example 2.

Example 3 Preparation of3-benzyl-5-fluoro-4-imino-1-(4-methoxyphenylsulfonyl)-3,4-dihydropyrimidin-2(1H)-one(Compound 5)

In a 20 mL microwave vial,5-fluoro-4-imino-1-(4-methoxyphenylsulfonyl)-3,4-dihydropyrimidin-2(1H)-one(111 mg, 0.37 mmol) was stirred at room temperature in dimethylformamide (3 mL) together with anhydrous potassium carbonate (210 mg,0.55 mmol). Benzylbromide (89 μL, 0.75 mmol) was added. The reaction wascapped and placed on a Biotage Initiator microwave reactor for 20 min at130° C., with external IR-sensor temperature monitoring from the side ofthe vessel. The reaction mixture was cooled to room temperature, dilutedwith ethyl acetate (EtOAc; 250 mL), and washed with water (H₂O; 3×100mL). The organic phase was dried over magnesium sulfate (MgSO₄),filtered, and the solvent evaporated under reduced pressure.Purification by flash chromatography (SiO₂, EtOAc/Hexanes gradient)afforded3-benzyl-5-fluoro-4-imino-1-(4-methoxyphenylsulfonyl)-3,4-dihydropyrimidin-2(1H)-oneas a pale yellow oil (15 mg; 11%): ¹H NMR (400 MHz, CDCl₃) δ 8.09-8.02(m, 3H), 7.38-7.27 (m, 6H), 7.00-6.96 (m, 2H), 4.65 (d, J=5.7 Hz, 2H),3.87 (s, 3H). ESIMS m/z 391 ([M+H]⁺).

TABLE I Compounds and Related Characterization Data Com- pound Appear-mp ESIMS No. Structure ance (° C.) + ¹H NMR ¹ 1

white solid 144 284 δ 8.52 (s, 1H), 8.03-8.00 (m, 2H), 7.97 (d, J = 5.9Hz, 1H), 7.80-7.76 (m, 1H), 7.67- 7.63 (m, 2H), 3.09 (s, 3H). 2

pale yellow solid 136- 139 290 δ 8.00 (d, J = 1.32 Hz, 1H), 7.81 (m,2H), 7.69 (d, J = 5.27 Hz, 1H), 7.18 (m, 1H), 3.37 (s, 3H). 3

pale yellow solid 158- 162 314 δ 8.01 (d, J = 9.22 Hz, 2H), 7.74 (d, J =5.27 Hz, 1H), 7.04 (d, J = 9.23 Hz, 2H), 3.90 (s, 3H), 3.31 (s, 3H). 4

white solid 147- 150 318, 321 δ 8.02 (d, J = 8.9 Hz, 2H), 7.71 (d, J =5.27 Hz, 1H), 7.57 (d, J = 8.90 Hz, 2H), 3.32 (s, 3H). 5

Yellow Oil — 391 ¹H NMR (400 MHz, CDCl₃) δ 8.09-8.02 (m, 3H), 7.38- 7.27(m, 6H), 7.00-6.96 (m, 2H), 4.65 (d, J = 5.7 Hz, 2H), 3.87 (s, 3H). 6

Pale Yellow solid 163- 166 298 δ 8.82 (m, 1H), 8.29 (d, J = 6.8 Hz, 1H),8.02 (dd, J = 8.4, 1.1 Hz, 2H), 7.79 (ddd, J = 6.9, 2.3, 1.1 Hz, 1H),7.66 (dd, J = 10.7, 4.9 Hz, 2H), 3.31 (q, J = 7.2 Hz, 2H), 1.09 (t, J =7.2 Hz, 3H). 7

Pale Yellow Solid 165- 168 332 ¹H NMR (400 MHz, DMSO- d6 + D₂O (95:5)) δ8.26 (d, J = 6.7 Hz, 1H), 8.04 (d, J = 8.8 Hz, 2H), 7.75 (d, J = 8.8 Hz,2H), 3.33 (q, J = 7.3 Hz, 2H), 1.09 (t, J = 7.2 Hz, 3H). 8

Pale Yellow Solid 107- 111 328 δ 8.75 (dd, J = 7.2, 3.4 Hz, 1H), 8.26(d, J = 6.8 Hz, 1H), 7.96 (d, J = 8.9 Hz, 2H), 7.17 (d, J = 9.0 Hz, 2H),3.87 (s, 3H), 3.32 (q, J = 7.2 Hz, 2H), 1.09 (t, J = 7.2 Hz, 3H). 9

Pale Yellow Solid 182- 185 366 ¹H NMR (400 MHz, DMSO- d6 + D₂O (95:5)) δ8.29 (d, J = 6.5 Hz, 1H), 7.71 (m, 3H), 3.35 (q, J = 7.2 Hz, 2H), 1.11(t, J = 1.2 Hz, 3H). ¹ All spectra were recorded in DMSO-d₆ at 300, 400or 600 MHz unless otherwise stated.

Example 4 Evaluation of Fungicidal Activity: Leaf Blotch of Wheat(Mycosphaerella graminicola; anamorph: Septoria tritici; Bayer codeSEPTTR)

Wheat plants (variety Yuma) were grown from seed in a greenhouse in 50%mineral soil/50% soil-less Metro mix until the first leaf was fullyemerged, with 7-10 seedlings per pot. These plants were inoculated withan aqueous spore suspension of Septoria tritici either prior to or afterfungicide treatments. After inoculation the plants were kept in 100%relative humidity (one day in a dark dew chamber followed by two days ina lighted dew chamber) to permit spores to germinate and infect theleaf. The plants were then transferred to a greenhouse for disease todevelop.

The following table presents the activity of typical compounds of thepresent disclosure when evaluated in these experiments. Theeffectiveness of the test compounds in controlling disease wasdetermined by assessing the severity of disease on treated plants, andthen converting the severity to percent control based on the level ofdisease on untreated, inoculated plants.

In each case of Table II the rating scale is as follows:

% Disease Control Rating 76-100 A 51-75  B 26-50  C 0-25 D Not Tested E

TABLE II One-Day Protectant (1 DP) and Three-Day Curative (3 DC)Activity of Compounds on SEPTTR at 100 ppm SEPTTR SEPTTR 100 PPM 100 PPMCmpd 1 DP 3 DC 1 A A 2 A A 3 A A 4 A A 5 D D 6 D D 7 B A 8 D B 9 D A

1.

wherein R₁ is: H; R₂ is: H; C₁-C₆ alkyl optionally substituted with R₄;benzyl optionally substituted with 1-3 R₅ R₃ is —S(O)₂R₆; R₄ isindependently halogen, C₁-C₆ alkyl, C₁-C₄ haloalkyl, C₁-C₄ alkoxy, C₁-C₄haloalkoxy, C₁-C₄ alkylthio, C₁-C₄ haloalkylthio, amino, C₁-C₃alkylamino, C₂-C₆ alkoxycarbonyl, C₂-C₆ alkylcarbonyl, C₂-C₆alkylaminocarbonyl, hydroxyl, or C₃-C₆ trialkylsilyl; R₅ isindependently halogen, C₁-C₆ alkyl, C₁-C₆ haloalkyl, C₁-C₆ alkoxy, C₁-C₆haloalkoxy, C₁-C₆ alkylthio, C₁-C₆ haloalkylthio, amino, C₁-C₆alkylamino, C₂-C₆ dialkylamino, C₂-C₆ alkoxycarbonyl, or C₂-C₆alkylcarbonyl, nitro, hydroxyl, or cyano; R₆ is C₁-C₆ alkyl, C₁-C₆haloalkyl, amino, C₁-C₆ alkylamino, C₂-C₆ dialkylamino, a phenyl orbenzyl wherein each of the phenyl or the benzyl may be optionallysubstituted with 1-3 R₅, or a 5- or 6-membered saturated or unsaturatedring containing 1-3 heteroatoms wherein each ring may be optionallysubstituted with 1-3 R₅.
 2. A composition for the control of a fungalpathogen including the compound of claim 1 and a phytologicallyacceptable carrier material.
 3. The composition of claim 2 wherein thefungal pathogen is Apple Scab (Venturia inaequalis), Leaf Blotch ofWheat (Septoria tritici), Leaf spot of sugarbeets (Cercospora beticola),Leaf Spot of peanut (Cercospora arachidicola), and Black Sigatoka(Mycosphaerella fijiensis).
 4. A method for the control and preventionof fungal attack on a plant, the method including the steps of: applyinga fungicidally effective amount of at least one of the compounds ofclaim 1 to at least one of the plant, an area adjacent to the plant,soil adapted to support growth of the plant, a root of the plant,foliage of the plant, and a seed adapted to produce the plant.